NOTES:The table shows families where the husband and wife are already closely related. To view the relationships, click on the descent column, or to view the descent line of the common paternal or maternal ancestor click the ancestor on the right.
† indicates that the relationship is only through one parent (i.e. a half relationship).
* indicates that the relationship is through an adoption or other legal relationship.
The descent column shows the number of generations to the common ancestor (husband:wife), so that

2:2 are first cousins

3:3 are second cousins

4:4 are third cousins

5:5 are fourth cousins etc

2:3 and 3:2 are first cousins once removed (similar for second) and

2:4 and 4:2 mark a twice-removed cousin.

If present, 1:2 and 2:1 are uncle/niece and aunt/nephew and 1:1 are siblings and 0:1 or 1:0 are parent/child (if at least one grandparent is present).
The number in square brackets (eg [3]) indicates the number of times these ancestors have marriages between cousins amongst their descendants